Fix Multiple Winners in the Test

[SuperConfuserUser]

Line 109-113 of the 04_game_spec asks that the won? method ''returns the correct winning combination in the case of a win''.

Board originally has two winners down the middle (Os) and the right side (Xs).
game.board.cells =
["X", "O", "X",
"O", "O", "X",
"O", "O", "X"]

Winning combos would be either [1,4,7] or [2,5,8]. So either could be returned as the winner depending on the order the combo. I had to move [2,5,8] ahead of [1,4,7] in WIN_COMBINATIONS definition to get it to pass.

It can be changed to game.board.cells =
["X", "O", "X",
"O", "O", "X",
" ", " ", "X"]

[hansenjl]

This pull request: https://github.com/learn-co-curriculum/ttt-with-ai-project/pull/42/files would fix this issue. @cjbrock